Panel



FIG. 1 is a perspective view of a panel showing our new design, the panel is broken in the center to show indeterminate length, the broken lines showing hollow voids in the interior of the panel are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is an opposite side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a front elevational view thereof. 

The ornamental design for a panel, as shown and described. 